Filmmaker Sudhir Mishra took to his Twitter account to share the heartbreaking news of his father's demise. Nikkhil Advani also penned a heartfelt note! 

Talking about Mishra's tweet first, he wrote-" My Dad Dr DevendraNath Misra passed away this morning ,A Lucknow boy ,wasmany things . A Mathematician nwent 2become a Professor of Mathematics ,Sagar University, Jt. Education Advisor, Mini of Education,Dep. Director CSIR, Head of MP Science n Technology n Vice. Chancellor BHU." (sic)